The 2018 Liqui-Moly Bathurst 12 Hour was a motor race for GT3, GT4 and invited cars, staged at the Mount Panorama Circuit, near Bathurst, in New South Wales, Australia on 4 February 2018. The 16th running of the Bathurst 12 Hour constituted the opening round of the 2018 Intercontinental GT Challenge Series. As per the previous year, the winners of the race were awarded the Australian Tourist Trophy.

The Bathurst 12 Hour, currently known as the Repco Bathurst 12 Hour for sponsorship reasons, is an annual endurance race for GT and production cars held at the Mount Panorama Circuit, in Bathurst, Australia. The race was first held in 1991 for Series Production cars and moved to Sydney's Eastern Creek Raceway in 1995 before being discontinued. The race was revived in 2007, again for production cars, before adding a new class for GT3 and other GT cars in 2011. This has led to unprecedented domestic and international exposure for the event. In all, twenty one races have taken place; twenty at Mount Panorama and one at Eastern Creek Raceway.